A mass is suspended from a cable to form a pendulum When the mass is displaced from its resting position and allowed to swing the displacement of the mass relative to its resting position is periodic. What is the general form of a trigonometric function with amplitude, a, and frequency, b, that could model the displacement d, of the mass relative to its resting position as a function of time, t, after passing through the resting position. A. d(t)= a cos (2πbt)
B. d(t)= a cos (bt)
C. d(t)= a sin (bt)
D. d(t)= a sin (2πbt)

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation:

if she was to only spend a dollar she can get 1lb

step-by-step explanation: